Finding the Fourth Proportional to 742,665.96, 1,024,878.15 and 403,134.21
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Solution
The fourth proportional to 742,665.96, 1,024,878.15 and 403,134.21 is: 556,324.73
Step by Step Solution
- Step 1: Write the proportion equation
742,665.96 : 1,024,878.15 = 403,134.21 : x - Step 2: Convert to fraction form
742,665.96/1,024,878.15 = 403,134.21/x - Step 3: Cross multiply
742,665.96x = 1,024,878.15 × 403,134.21 - Step 4: Simplify right side
742,665.96x = 413,163,443,346.51 - Step 5: Solve for x
x = 413,163,443,346.51/742,665.96 - Step 6: Final answer
x = 556,324.73
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.